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Updated Publications, June 2019

Updated Publications, June 2019

ANSI/ASHRAE Standard 30-2019, Method of Testing Liquid Chillers, prescribes methods for obtaining performance test data of liquid-chilling or liquid-heating equipment using the vapor compression thermodynamic cycle and any type of compressor.  

The 2019 version includes several updates:

  • Clarification of operating condition tolerance and stability criteria when redundant measurements are required.

  • Reference to ANSI/ASHRAE Standard 41.8, Standard Methods for Liquid Flow Measurement, for liquid mass flow rate measurements.

  • Clarification that test instrument measurement resolution includes all parts of the measurement system, such as analog-to-digital conversion.

  • Updates to Section 9 test report requirements to align with AHRI standards 550/590 and 551/591.

The standard was last updated in 2017.

ANSI/ASHRAE Standard 41.8-2016 (RA 2019), Standard Methods for Liquid Flow Measurement, includes no changes from its 2016 edition.

Standard 41.8 prescribes methods for liquid flow measurement and applies to laboratory and field liquid flow measurement for testing heating, ventilating, air-conditioning and refrigerating systems and components.

The 2016 edition expanded the scope to cover the breadth of liquid flow measurement devices used for testing HVAC&R systems and components, except for refrigerant liquid flow measurement devices, which are the focus of ASHRAE Standard 41.10, Standard Methods For Refrigerant Mass Flow Measurement Using Flowmeters.

ANSI/ASHRAE Standard 150-2019, Method of Testing the Performance of Cool-Storage Systems, prescribes a uniform set of testing procedures for determining the cooling capacities and efficiencies of cool storage systems. It was last updated in 2000.

ANSI/ASHRAE Standard 158.1-2019, Methods of Testing Capacity of Refrigerant Solenoid Valves, prescribes a method of testing the capacity of refrigerant solenoid valves for use in refrigerating systems. The standard was last revised in 2012.